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fix isSameAs for ArrayIndexed expressions, and by extension, assignment.isAugmentable()

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This commit is contained in:
Irmen de Jong 2020-10-01 23:26:43 +02:00
parent 1464050bf5
commit 9cd3a9f8e8
1 changed files with 10 additions and 7 deletions
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17
compiler/src/prog8/ast/statements/AstStatements.kt
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@ -303,6 +303,8 @@ class ArrayIndex(var index: Expression, override val position: Position) : Node
}
fun constIndex() = (index as? NumericLiteralValue)?.number?.toInt()
infix fun isSameAs(other: ArrayIndex) = index.isSameAs(other.index)
}
open class Assignment(var target: AssignTarget, var value: Expression, override val position: Position) : Statement() {
@ -441,19 +443,20 @@ data class AssignTarget(var identifier: IdentifierReference?,
infix fun isSameAs(value: Expression): Boolean {
return when {
this.memoryAddress != null -> {
memoryAddress != null -> {
// if the target is a memory write, and the value is a memory read, they're the same if the address matches
if (value is DirectMemoryRead)
this.memoryAddress.addressExpression isSameAs value.addressExpression
else
false
}
this.identifier != null -> value is IdentifierReference && value.nameInSource == identifier!!.nameInSource
this.arrayindexed != null -> value is ArrayIndexedExpression &&
value.identifier.nameInSource == arrayindexed!!.identifier.nameInSource &&
value.arrayspec.constIndex() != null &&
arrayindexed!!.arrayspec.constIndex() != null &&
value.arrayspec.constIndex() == arrayindexed!!.arrayspec.constIndex()
identifier != null -> value is IdentifierReference && value.nameInSource == identifier!!.nameInSource
arrayindexed != null -> {
if(value is ArrayIndexedExpression && value.identifier.nameInSource == arrayindexed!!.identifier.nameInSource)
arrayindexed!!.arrayspec isSameAs value.arrayspec
else
false
}
else -> false
}
}